Stability of two cobalt titanate defect spinels
Abstract
Preparation of the defect spinels Ti 3□Co 2O 8 and Ti 4□Co 4O 12 was attempted by solid state exchange reactions. Ti 4□Co 4O 12 was successfully synthesized but attempts at preparing pure Ti 3□Co 2O 8 were unsuccessful, The enthalpy of transformation of {1}/{4}Ti 4□Co 4O 12 to CoTiO 3 (ilmenite) was determined by calorimetry, ΔH° 298 = -1.7 ± 1.0 kcal/mole.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- January 1975
- DOI:
- 10.1016/0022-4596(75)90187-5
- Bibcode:
- 1975JSSCh..12..122S